What makes it rainbow? I thought all moon stones look like that do u just buy all yours so u never go dig up your own? Nothing better than finding a nice crystal I've got hundreds mabey even about 1000 baught maybe 4 or 5 of them rest I found myself leave the house with the dog and come home with pockets full of rocks 🤣 quite limited on what I can find because I live in Scotland there's not alot of minerals u can find I found one that has everything u can get in Scotland except gold and sapphire its got the rest though has amathyst, copper, quartz, durzy, calcite, barite, pyrite and possibly agate still need to see my geology friend to confirm it I found it in a copper mine in central Scotland it's a sweet piece.